311112943 has 2 divisors, whose sum is σ = 311112944. Its totient is φ = 311112942.

The previous prime is 311112941. The next prime is 311113003. The reversal of 311112943 is 349211113.

It is a weak prime.

It is an emirp because it is prime and its reverse (349211113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311112943 - 2¹ = 311112941 is a prime.

Together with 311112941, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311112941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155556471 + 155556472.

It is an arithmetic number, because the mean of its divisors is an integer number (155556472).

Almost surely, 2^311112943 is an apocalyptic number.

311112943 is a deficient number, since it is larger than the sum of its proper divisors (1).

311112943 is an equidigital number, since it uses as much as digits as its factorization.

311112943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 25.

The square root of 311112943 is about 17638.3940028564. The cubic root of 311112943 is about 677.5989011539.

The spelling of 311112943 in words is "three hundred eleven million, one hundred twelve thousand, nine hundred forty-three".